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Finding the Fourth Proportional to 78,318.82, 108,078.81 and 44,333.76

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Solution

The fourth proportional to 78,318.82, 108,078.81 and 44,333.76 is: 61,179.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,318.82 : 108,078.81 = 44,333.76 : x
  2. Step 2: Convert to fraction form
    78,318.82/108,078.81 = 44,333.76/x
  3. Step 3: Cross multiply
    78,318.82x = 108,078.81 × 44,333.76
  4. Step 4: Simplify right side
    78,318.82x = 4,791,540,023.63
  5. Step 5: Solve for x
    x = 4,791,540,023.63/78,318.82
  6. Step 6: Final answer
    x = 61,179.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.